Three Sizes Grinch Slime Recipe for Kids To Make This Christmas!

And his heart grew three sizes that day…Make some awesome Grinch slime to go along with the book or movie this season. The Grinch has such a wonderful message for kids and families all year round! We just enjoyed the new movie, and of course had to make a Grinch theme slime! Kids will love this fun Christmas science activity with our simple homemade slime recipe. This is just one of our favorite holiday themed slimes!

GRINCH SLIME RECIPE FOR A HOMEMADE CHRISTMAS!

The kids will love turning a favorite Christmas book and movie into slime with this super easy Grinch theme! Our simple Grinch slime recipe is perfect for little hands. This is just one of our many Christmas slime ideas to try!

Slime making is even more fun when you add in creative Christmas themes like the Grinch. We have quite a few to share, and we are always adding more. Our Homemade Christmas Grinch Slime Recipeis yet another AMAZING slime recipe we can show you how to make.

GRINCH SLIME SCIENCE AND CHEMISTRY

We always like to include a bit of homemade slime science around here, and that’s perfect for exploring Chemistry with a fun Grinchy theme. Slime is an excellent chemistry demonstration and kids love it too! Mixtures, substances, polymers, cross linking, states of matter, elasticity, and viscosity are just a few of the science concepts that can be explored with homemade slime!

What’s the science behind the slime? The borate ions in the slime activators (sodium borate, borax powder, or boric acid) mix with the PVA (polyvinyl-acetate) glue and forms this cool stretchy substance. This is called cross linking!

The glue is a polymer and is made up of long, repeating, and identical strands or molecules. These molecules with flow past one another keeping the glue in a liquid state. Until…

SLIME IS A NON- NEWTONIAN FLUID

When you add the borate ions to the mixture, it starts to connect these long strands together. They begin to tangle and mix until the substance is less like the liquid you started with and thicker and rubberier like slime! Slime is a polymer.

Picture the difference between wet spaghetti and leftover spaghetti the next day. As the slime forms the tangled molecule strands are much like the clump of spaghetti!

Is slime a liquid or solid? We call it a Non-newtonian fluid because it’s a little bit of both! Experiment with making the slime more or less viscous with varying amounts of foam beads. Can you change the density?

EASY GRINCH SLIME IDEAS

We made this Grinch slime with clear glue, food coloring, glitter and confetti hearts. However, white glue is super easy to use and also works well for this recipe, but your color will be slightly different!

Come up with your own favorite Grinch theme slimes:

Try adding a cup of foam beads to the recipe for a floam slime. Make a batch in green and a batch in red. Use heart shape cookie cutters to make floam hearts.

Try kneading in an ounce or two of soft clay after your slime is made for a butter slime (see it here). Make a batch in red and green!

GRINCH THEME SLIME TIPS

The base for this Grinch slime uses one of our most basic slime recipes which is clear glue, water, baking soda, and saline solution.

Now if you don’t want to use saline solution, you can absolutely test out one of our other basic recipes using liquid starch or borax powder. We have tested all three recipes with equal success!

Our easy, “how to make” slime recipes will show you how to master slime in 5 minutes! We have spent years tinkering with our 4 now 5 favorite basic slime recipes to make sure you can make the BEST slime every time!

We believe learning how to make slime shouldn’t be disappointing or frustrating! That’s why we want to take the guess work out of making slime!

Discover the best slime ingredients and get the right slime supplies the first time!

Make easy fluffy slime recipes that really work!

Achieve awesome squishy, slimy consistency the kids love!

We have the best resources to look through before, during, and after making your Grinch Christmas slime! Make sure to go back and read the slime science above too!

GRINCH SLIME RECIPE DIRECTIONS BELOW

This fun Grinch movie or book slime activity calls for one batch of our easy Christmas slime recipe. You can make more or less depending on your character ideas!

The best slime recipe starts with the right slime ingredients. Make sure to follow along with our measurements. Start by adding your glue and water to a bowl and grab a mixing utensil. Mix it up and add food coloring and glitter as desired!

EASY GRINCH GREEN SLIME

Combine water, glue, and food coloring in a large bowl and mix well! Next add baking soda. You can also go ahead and add glitter and your red confetti hearts. make sure to save some for Valentine’s Day slime too!

SLIME TIP #1: For a Grinchy-green slime color, you can use the neon green food coloring. Or try a couple drops of yellow with a drop of green. Make sure to not make the slime too dark in color so you can really see your hearts!

BEST SLIME ACTIVATORS

Add in your slime activator (baking soda and saline solution) to complete the chemical reaction you read about above in the science behind the slime section. If you scrolled past it, go back and read it with your kids!

What does the baking soda do? It adds the firmness the mixture needs so you can pick it up. This ingredient is a great variable to tinker with for a science experiment!

You can also learn more about all our favorite slime activators here. Keep in mind that liquid starch, saline solution, and borax powder are all in the boron family. Neither of these ingredients are truly borax free.

We always recommend kneading your slime well after mixing. Kneading the slime really helps to improve it’s consistency. The trick with saline solution slime is to squirt a few drops of solution onto your hands before picking up the slime.

You can knead the slime in the bowl before you pick it up as well. This slime is stretchy but can be stickier. However, keep in mind that although adding more saline solution reduces the stickiness, and it will eventually create a stiffer slime.

SALINE SOLUTION SLIME RECIPE FOR MAKING CHRISTMAS SLIME IDEAS

STEP 5: Mix in 1 tbsp saline solution and stir until slime forms and pulls away from sides of bowl. This is exactly how much you will need with the Target Sensitive Eyes brand, but other brands may differ slightly!

If your slime still feels too sticky, you may need a few more drops of saline solution. As I mentioned above, start by squirting a few drops of the solution onto your hands and kneading your slime longer. You can always add but you can’t take away. Saline solution is preferred over contact solution.

STORING YOUR GRINCH SLIME

Slime lasts quite awhile! I get a lot of questions regarding how I store my slime. We use reusable containers in either plastic or glass. Make sure to keep your slime clean and it will last for several weeks. I love the deli style containers in my recommended slime supplies list here.

If you want to send kids home with a bit of slime from a camp, party, or classroom project, I would suggest packages of reusable containers from the dollar store or grocery store or even Amazon. For large groups we have used condiment containers as seen here.

Want to have all our basic recipes handy and in one place? Use the buttons just below to download your free slime recipes cheat sheet pages and challenges. We also have an awesome MASTER YOUR SLIME training series going on here.

MORE SLIME MAKING RESOURCES!

Everything you need to know about making slime is below! Did you know we also have fun with science activities too? Click on all the pictures below to learn even more great ideas for slime making.